We purchased the Waterpik at our dentists advice for our son with braces. It works great and it's very easy to use, if fact all three of our boys use it.
Just purchased my second Waterpik flosser. My dental hygienist knew immediately that I use Waterpik and told me what I good job I have done, that my gums look perfect and I am 69 years old!
The Waterpik works well. Water pressure can be adjusted to accommodate different areas of the mouth. It does take a bit of coordination to assure the water flow is stopped before pulling the wand from the mouth. The Waterpik is a bit top-heavy when filled with water. I used Velcro dots to hold it to the counter to avoid tipping.